Pneumatic lined ball valve belongs to Q641 floating lined ball valve series, consist of pneumatic actuator and lined ball valve, valve body equipped with pneumatic and electric actuator is composed of different types of ball valve. This valve is divided into full bore O-port ball valve and V-port ball valve according to the ball shape. It has the advantages of low resistance, big flow coefficient, lastest structure and outstanding characteristic , the technology of the products has reached the advanced domestic level. Widely used as shut off or regulation, V-port ball of control valve is designed as per customer required and linear flow characteristic to realized ideal regulating characteristic.